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hi ,i need service mode methods for lg43lh500 and lg43510T(hoding menu/setting on the tv panel method wont work since these set got only one power button on the tv panel)using origenal remote control ,or send factory mode sound to inrared file.thnx
hi,disconnect all secondary output diodes and horizontaloutput transistor(hot)leaving only the high voltage (ht)diode connected to load(60/100watt-filament bulb and ground.power the set ,measure ht voltage acrossyour load..1)is any votage?ifnotgo to urprimary side mostlikely failing parts...
hi to all,this av receiver 3d amp,when powered will go on an show "welcome " message and goes to standby,i suspect a fault in the power amp section since it reads +30 and -30 volts and drops.Now since it is a smps power supply and computerised,this may mean at switch on over/under voltage...
hi,i don't have manual,but if it takes long time before it shows error message"cd error,no disk,etc" change the laser block,but if short start and stop change the motor.
u have to look 4 service manual.it seems like maldischrge.most samsung set got test points u have to join -then it will display a test pattern for u.then u can easyly know which board is faulty.
try visual inspection on psu,y board and x board most troublesome units,if not u have to give technical details ,exact voltage as indicated on the sticker @ the back of your screen .
u better use variac (variable ac supply starting from 1v to 120v/220v).sometimes u have to join other wires like yellow and grey ( e.g as shown on your picture) to make a centre tap.also google transformer colour coding.
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